1) If one is being catty, they are being subtly or indirectly insulting. Different from bitchy in that bitchiness is justmean, while cattiness is often clever and witty, and isn't ALWAYS completely mean (for example, a catty joke). Both males and females can be and are catty.

The Urban Dictionary Mug

1) If one is being catty, they are being subtly or indirectly insulting. Different from bitchy in that bitchiness is just mean, while cattiness is often clever and witty, and isn't ALWAYS completely mean (for example, a catty joke). Though it is most often used in reference to women, it can be used in reference to men as well.